Step 1: Acquire seeds
Give your seeds a wash in the colander to remove a bit more of the sticky stuff. Don't stress too much about getting them perfectly clean- a bit of leftover pumpkin flesh will add flavor.
Step 2: Oil and season
Drizzle the baking sheet with olive oil, dump in your rinsed and drained seeds, and add seasonings. I used a combination of garlic salt and cajun spice here, but use whatever you like. Options include hot sauces, soy sauce, curry powder, worchestershire sauce, or anything else that makes your mouth happy.
Stir the seeds around with your fingers until they're all well covered in oil and spice. Lick your fingers to make sure you're happy with the spice mixture.
Step 3: Bake
When they're golden brown on the edges, set them aside to cool. Be careful- hot oily pumpkin seeds will burn you.
Depending on how heavily you've loaded up your tray and the enthusiasm of your oven, it may take 15 - 30 minutes to toast your pumpkin seeds. The small amount I've used here made a nice thin layer, and toasted in about 15 minutes. Keep checking, and stir frequently.